complex possessing a benzoyloxy group and an allylsilane moiety reacted with furan to give a 11-oxabicyclo[6.2.1]undec-9-ene derivative. On treatment with iodine, the cycloadduct underwent decomplexation followed by rearrangement of the oxygen bridge to afford a 11-oxabicyclo[5.3.1]undeca-1,5-diene derivative.
在正式的[6 + 4]环加成反应的基础上,已经开发出一种有效的用氧桥构建十元碳环的方法。在EtAlCl 2的影响下,具有苯甲酰氧基和烯丙基
硅烷部分的二
钴二羰基六羰基
乙炔配合物与
呋喃反应,生成11-氧杂双环[6.2.1]
十一烷基-9-烯衍
生物。用
碘处理时,使环加合物分解并随后重新排列氧桥,得到11-氧杂双环[5.3.1] undeca-1,5-二烯衍
生物。